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                    <h1>棉花缺硼诊断及施肥技术</h1>
                    
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                        <span class="article-source">来源：天山植保</span>
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                            <p>硼是棉花生长发育所必需的微量元素之一，缺硼会严重影响棉花的生长发育和产量品质。本文详细介绍棉花缺硼的诊断方法和科学施肥技术。</p>
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                        <section>
                            <h2>一、缺硼症状诊断</h2>
                            <div class="solution-points">
                                <h3>1. 苗期症状</h3>
                                <ul>
                                    <li><strong>生长点：</strong>顶芽发黑、坏死。</li>
                                    <li><strong>叶片：</strong>新叶畸形、皱缩。</li>
                                    <li><strong>茎秆：</strong>茎节短缩，节间变短。</li>
                                </ul>

                                <h3>2. 花铃期症状</h3>
                                <ul>
                                    <li><strong>花蕾：</strong>花蕾脱落严重。</li>
                                    <li><strong>棉铃：</strong>铃小、畸形，易脱落。</li>
                                    <li><strong>纤维：</strong>纤维发育不良，品质下降。</li>
                                </ul>
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                        </section>

                        <section>
                            <h2>二、缺硼原因分析</h2>
                            <div class="solution-points">
                                <h3>1. 土壤因素</h3>
                                <ul>
                                    <li><strong>土壤类型：</strong>砂质土壤易缺硼。</li>
                                    <li><strong>pH值：</strong>碱性土壤硼有效性低。</li>
                                    <li><strong>有机质：</strong>有机质含量低导致缺硼。</li>
                                </ul>

                                <h3>2. 环境因素</h3>
                                <ul>
                                    <li><strong>气候条件：</strong>干旱或多雨都会影响硼的吸收。</li>
                                    <li><strong>温度：</strong>低温影响硼素吸收。</li>
                                </ul>
                            </div>
                        </section>

                        <section>
                            <h2>三、施肥技术要点</h2>
                            <div class="solution-points">
                                <h3>1. 土壤施用</h3>
                                <ul>
                                    <li><strong>施用时期：</strong>播种前或苗期施用。</li>
                                    <li><strong>施用量：</strong>每亩施用硼砂1.5-2.0公斤。</li>
                                    <li><strong>施用方法：</strong>撒施或沟施，与土壤充分混合。</li>
                                </ul>

                                <h3>2. 叶面喷施</h3>
                                <ul>
                                    <li><strong>浓度：</strong>0.1%-0.2%硼砂溶液。</li>
                                    <li><strong>时期：</strong>现蕾初期和盛花期各喷施1次。</li>
                                    <li><strong>方法：</strong>晴天早晚喷施，喷匀叶面。</li>
                                </ul>
                            </div>
                        </section>

                        <section>
                            <h2>四、注意事项</h2>
                            <div class="analysis-points">
                                <div class="point">
                                    <h3>施用注意事项：</h3>
                                    <ul>
                                        <li>严格控制用量，避免过量。</li>
                                        <li>选择适宜的施用时期。</li>
                                        <li>注意与其他肥料的配伍。</li>
                                    </ul>
                                </div>
                                
                                <div class="point">
                                    <h3>预防措施：</h3>
                                    <ul>
                                        <li>定期进行土壤检测。</li>
                                        <li>合理轮作倒茬。</li>
                                        <li>增施有机肥。</li>
                                    </ul>
                                </div>
                            </div>
                            <p class="highlight-text">科学施用硼肥，既要注意诊断方法的准确性，又要把握好施用时期和用量，同时要采取综合措施预防缺硼的发生。</p>
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